Results 131 to 140 of about 20,641 (239)

Cell-Free Massive MIMO Power Consumption with Serial Front-Hauls

Telecom
Massive MIMO deployments have been traditionally based on dedicated links in the front-haul, i.e., between the central processing units and the Access Points (APs). Recently, cell-free massive Multiple-Input Multiple-Output (MIMO) systems based on serial
Danaisy Prado-Alvarez, Saúl Inca, David Martín-Sacristán, Jose F. Monserrat   +3 more
doaj   +1 more source

On the Achievable Rates of Decentralized Equalization in Massive MU-MIMO Systems

, 2017
Massive multi-user (MU) multiple-input multiple-output (MIMO) promises significant gains in spectral efficiency compared to traditional, small-scale MIMO technology.
Cavallaro, Joseph R., Jeon, Charles, Li, Kaipeng, Studer, Christoph   +3 more
core   +1 more source

Cell-Free Massive MIMO With Multi-Antenna Users and Phase Misalignments: A Novel Partially Coherent Transmission Framework

IEEE Open Journal of the Communications Society
CELL-FREE massive multiple-input multiple-output (MIMO) is a promising technology for next-generation communication systems. This work proposes a novel partially coherent (PC) transmission framework to cope with the challenge of phase misalignment among ...
Unnikrishnan Kunnath Ganesan, Tung Thanh Vu, Erik G. Larsson   +2 more
doaj   +1 more source

Scalable Cell-Free Massive MIMO With Indoor/Outdoor Users

IEEE Open Journal of Vehicular Technology
Cell-free networks are expected to be a forthcoming (r)evolutionary step in the coming generation of mobile networks, the so called 6 G. While mobile infrastructure is often assumed to be deployed outdoor by the operators, reality is that most of the ...
Felip Riera-Palou, Miquel Duran, Guillem Femenias   +2 more
doaj   +1 more source

Analysis of Massive MIMO With Hardware Impairments and Different Channel Models

, 2015
Massive Multiple-Input Multiple-Output (MIMO) is foreseen to be one of the main technology components in next generation cellular communications (5G). In this paper, fundamental limits on the performance of downlink massive MIMO systems are investigated ...
Athley, Fredrik, Durisi, Giuseppe, Gustavsson, Ulf   +2 more
core  

Joint AP-UE Association and Precoding for SIM-Aided Cell-Free Massive MIMO Systems [PDF]

IEEE Transactions on Wireless Communications
Cell-free (CF) massive multiple-input multiple-output (mMIMO) systems are emerging as promising alternatives to cellular networks, especially in ultra-dense environments. However, further capacity enhancement requires the deployment of more access points
Enyu Shi, Jiayi Zhang, Jiancheng An, Guangyang Zhang, Zih-Yi Liu, Chau Yuen, Bo Ai   +6 more
semanticscholar   +1 more source

A Left-Null-Space-Based Massive Access Method for Cell-Free Massive MIMO IoT Systems. [PDF]

Sensors (Basel), 2023
Wang Y, Wang Y, Hu D.
europepmc   +1 more source

Pilot interference mitigation for TDD cell-free massive MIMO systems

Dianxin kexue, 2022
To alleviate the pilot interference for cell-free massive multi-input multi-output (MIMO) system and improve system’s performance, a comprehensive approach including the pilot reuse, access point (AP) selection and power allocation was proposed.Firstly ...
Yue WANG, Fangmin XU, Haiyan CAO
doaj  

Joint User Clustering and Graph Coloring Based Pilot Assignment for Cell-Free Massive MIMO Systems. [PDF]

Sensors (Basel), 2023
Huang X, Wang Y, Chen S, Li Y, Wu Y.
europepmc   +1 more source

Power Control for D2D Underlay in Multi-cell Massive MIMO Networks

, 2018
This paper proposes a new power control and pilot allocation scheme for device-to-device (D2D) communication underlaying a multi-cell massive MIMO system.
Björnson, Emil, Ghazanfari, Amin, Larsson, Erik G.   +2 more
core